Test the isEqualNode API.
On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
Test isEqualNode for DocumentType nodes.
PASS docTypeAllSet.isEqualNode(docTypeAllSet2) is true
PASS docTypeAllSet.isEqualNode(docTypeDifferentPublicID) is false
PASS docTypeAllSet.isEqualNode(docTypeDifferentSystemID) is false
PASS successfullyParsed is true
TEST COMPLETE